EP 0936390 A3 20030205 - Dual coil tubing assembly
Title (en)
Dual coil tubing assembly
Title (de)
Gewickelte Doppelrohrkonstruktion
Title (fr)
Construction à tuyau double enroulé
Publication
Application
Priority
US 7457398 P 19980213
Abstract (en)
[origin: EP0936390A2] A tubing assembly (16) for conveying fluid under pressure, such as from a source of air pressure in a vehicle to an airbrake system of the vehicle, and including flexible first and second tubing members (12a,12b), each having an outer surface (24a,24b), and extending axially from a forward distal end to a rearward distal end (32a,32b). The first tubing member (12a) is wound intermediate the forward and the rearward distal end thereof radially about a generally cylindrical surface space (34) to define a first expandable, self-retracting coil portion (38) having a plurality of first turns. The second tubing member (12b), in turn, is wound intermediate the forward and the rearward distal end thereof radially about the cylindrical surface space (34) to define a second expandable, self-retracting coil portion (38b) disposed within the curve of the cylindrical surface space (34) as extending parallel to the first coil portion (38a) and as having a plurality of second turns. With each of the second turns of the second coil portion (38b) being disposed adjacent a corresponding one of the first turns of the first coil portion (38a), a unitary sheathing member (14) is provided to commonly surround the first and the second tubing members (12a,12b) as extending intermediate the forward (30a,30b) and the rearward (32a,32b) distal ends thereof. As surrounded by the sheathing member (14), each of the second turns of the second coil portion (38a) is thereby paired for mutual axial movement with a corresponding one of the first turns of the first coil portion (38b) as the first and the second coil portion (38a,38b) are extended and retracted. <IMAGE>
IPC 1-7
IPC 8 full level
F16L 11/22 (2006.01)
CPC (source: EP)
F16L 11/22 (2013.01)
Citation (search report)
- [XY] GB 2308509 A 19970625 - ALLEN GROUP LTD [GB]
- [Y] FR 2225680 A1 19741108 - LOTIGIE ETS [FR]
- [Y] GB 1139912 A 19690115 - TREVOR FREDERICK MOSS
- [Y] US 5346290 A 19940913 - ORCUTT ERIC D [US]
- [A] US 3487858 A 19700106 - HANBACK FRANCIS J
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 99300671 A 19990129